package cn.tedu.spring.bean;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.stereotype.Service;

/**
 * 注入对象类型的数据
 */
@Service
public class UserService {
    @Value("业务名称")
    private String name;
    /*
        Autowired注解：自动装配;
        1.注入对象[Java类型]或者接口[interface]类型的数据;
        2.添加位置:
          2.1 属性上;
          2.2 set方法上;
          2.3 构造方法上;
     */
    //@Autowired
    private UserDao userDao;

    //@Autowired
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    @Autowired
    public UserService(UserDao userDao) {
        this.userDao = userDao;
    }

    @Override
    public String toString() {
        return "UserService{" +
                "name='" + name + '\'' +
                ", userDao=" + userDao +
                '}';
    }
}













